I execute "sample_exec.json" step by step. I receive response both requests: no prefix and exists prefix.

range_query_sample_exec.json

# create index
curl -XPUT "http://localhost:9200/restful"

# post mapping
curl -XPOST "http://localhost:9200/restful/events/_mapping" -d'
{
  "events" : {
    "dynamic_templates" : [ {
      "template_string" : {
        "mapping" : {
          "type" : "multi_field",
          "fields" : {
            "str" : {
              "index_analyzer" : "simple",
              "type" : "string"
            },
            "{name}" : {
              "index_analyzer" : "verbatim",
              "type" : "string"
            }
          }
        },
        "match" : "*",
        "match_mapping_type" : "string"
      }
    }, {
      "template_integer" : {
        "mapping" : {
          "type" : "multi_field",
          "fields" : {
            "str" : {
              "index_analyzer" : "simple",
              "type" : "string"
            },
            "{name}" : {
              "type" : "{dynamic_type}"
            }
          }
        },
        "match" : "*",
        "match_mapping_type" : "integer"
      }
    }, {
      "template_long" : {
        "mapping" : {
          "type" : "multi_field",
          "fields" : {
            "str" : {
              "index_analyzer" : "simple",
              "type" : "string"
            },
            "{name}" : {
              "type" : "{dynamic_type}"
            }
          }
        },
        "match" : "*",
        "match_mapping_type" : "long"
      }
    }, {
      "template_double" : {
        "mapping" : {
          "type" : "multi_field",
          "fields" : {
            "str" : {
              "index_analyzer" : "simple",
              "type" : "string"
            },
            "{name}" : {
              "type" : "{dynamic_type}"
            }
          }
        },
        "match" : "*",
        "match_mapping_type" : "double"
      }
    }, {
      "template_date" : {
        "mapping" : {
          "type" : "multi_field",
          "fields" : {
            "str" : {
              "index_analyzer" : "simple",
              "type" : "string"
            },
            "{name}" : {
              "type" : "{dynamic_type}"
            }
          }
        },
        "match" : "*",
        "match_mapping_type" : "date"
      }
    }, {
      "template_boolean" : {
        "mapping" : {
          "type" : "multi_field",
          "fields" : {
            "str" : {
              "index_analyzer" : "simple",
              "type" : "string"
            },
            "{name}" : {
              "type" : "{dynamic_type}"
            }
          }
        },
        "match" : "*",
        "match_mapping_type" : "boolean"
      }
    } ],
    "properties" : {
      "id" : {
        "type" : "multi_field",
        "fields" : {
          "id" : {
            "type" : "long"
          },
          "str" : {
            "type" : "string",
            "index_analyzer" : "simple",
            "include_in_all" : false
          }
        }
      },
      "timestamp" : {
        "type" : "multi_field",
        "fields" : {
          "timestamp" : {
            "type" : "double"
          },
          "str" : {
            "type" : "string",
            "index_analyzer" : "simple",
            "include_in_all" : false
          }
        }
      }
    }
  }
}'

# post doc #1
curl -XPOST "http://localhost:9200/restful/events/1" -d'
{
    "id" : 123456,
    "timestamp" : 1383467659
}'

# post doc #2
curl -XPOST "http://localhost:9200/restful/events/2" -d'
{
    "timestamp" : 1383467425.0,
    "id" : 2
}'

# search no prefix
curl -XGET http://localhost:9200/restful/_search?pretty -d '{ "query": {"bool": {"must": [{"term": {"_type": "events"}}, {"range": { "events.timestamp": {"to": 1383467660, "include_upper": false }}}]}}}'
{
  "took" : 57,
  "timed_out" : false,
  "_shards" : {
    "total" : 5,
    "successful" : 5,
    "failed" : 0
  },
  "hits" : {
    "total" : 2,
    "max_score" : 1.4142135,
    "hits" : [ {
      "_index" : "restful",
      "_type" : "events",
      "_id" : "1",
      "_score" : 1.4142135, "_source" : {
    "id" : 123456,
    "timestamp" : 1383467659
}

    }, {
      "_index" : "restful",
      "_type" : "events",
      "_id" : "2",
      "_score" : 1.4142135, "_source" : {
    "timestamp" : 1383467425.0,
    "id" : 2
}

    } ]
  }
}

# search exist prefix
curl -XGET http://localhost:9200/restful/_search?pretty -d '{ "query": {"bool": {"must": [{"term": {"_type": "events"}}, {"range": { "timestamp": {"to": 1383467660, "include_upper": false }}}]}}}'
{
  "took" : 29,
  "timed_out" : false,
  "_shards" : {
    "total" : 5,
    "successful" : 5,
    "failed" : 0
  },
  "hits" : {
    "total" : 2,
    "max_score" : 1.4142135,
    "hits" : [ {
      "_index" : "restful",
      "_type" : "events",
      "_id" : "1",
      "_score" : 1.4142135, "_source" : {
    "id" : 123456,
    "timestamp" : 1383467659
}

    }, {
      "_index" : "restful",
      "_type" : "events",
      "_id" : "2",
      "_score" : 1.4142135, "_source" : {
    "timestamp" : 1383467425.0,
    "id" : 2
}

    } ]
  }
}