cosmos db compound index count RU issue

gistfile1.txt

globaldb:PRIMARY> db.users.count({test:"TelescopeTest2",created:{$gte:"2020-08-20T06:00:00Z"}})
29239

globaldb:PRIMARY> db.runCommand({getLastRequestStatistics:1})
{
	"CommandName" : "count",
	"RequestCharge" : 1290.15,
	"RequestDurationInMilliSeconds" : NumberLong(268),
	"ActivityId" : "f94b30bb-3599-49a7-a888-982827b6be51",
	"ok" : 1
}

globaldb:PRIMARY> db.users.explain().count({test:"TelescopeTest2",created:{$gte:"2020-08-20T06:00:00Z"}})
{
	"stages" : [
		{
			"stage" : "$aggregateQuery",
			"timeInclusiveMS" : 246.0923,
			"timeExclusiveMS" : 0.0361,
			"in" : 1,
			"out" : 1,
			"details" : {
				"database" : "telescope",
				"collection" : "users",
				"query" : {
					"$and" : [
						{
							"test" : {
								"$eq" : "TelescopeTest2"
							}
						},
						{
							"created" : {
								"$gte" : "2020-08-20T06:00:00Z"
							}
						}
					]
				},
				"pathsIndexed" : [
					"test",
					"created"
				],
				"pathsNotIndexed" : [ ],
				"aggregate" : {
					"$count" : "c"
				},
				"shardInformation" : [
					{
						"activityId" : "2a0da7a0-c666-488d-8eb1-33b28d352926",
						"shardKeyRangeId" : "0",
						"durationMS" : 245.0833,
						"preemptions" : 1,
						"outputDocumentCount" : 1,
						"retrievedDocumentCount" : 29283
					}
				],
				"queryMetrics" : {
					"retrievedDocumentCount" : 29283,
					"retrievedDocumentSizeBytes" : 14203581,
					"outputDocumentCount" : 1,
					"outputDocumentSizeBytes" : 46,
					"indexHitRatio" : 0,
					"totalQueryExecutionTimeMS" : 243.55,
					"queryPreparationTimes" : {
						"queryCompilationTimeMS" : 0.17,
						"logicalPlanBuildTimeMS" : 0.13,
						"physicalPlanBuildTimeMS" : 0.25,
						"queryOptimizationTimeMS" : 0.04
					},
					"indexLookupTimeMS" : 0.24000000000000002,
					"documentLoadTimeMS" : 154.12,
					"vmExecutionTimeMS" : 242.72,
					"runtimeExecutionTimes" : {
						"queryEngineExecutionTimeMS" : 88.36,
						"systemFunctionExecutionTimeMS" : 34.82,
						"userDefinedFunctionExecutionTimeMS" : 0
					},
					"documentWriteTimeMS" : 0
				}
			}
		}
	],
	"estimatedDelayFromRateLimitingInMilliseconds" : 0,
	"continuation" : {
		"hasMore" : false
	},
	"ok" : 1
}

globaldb:PRIMARY> db.users.getIndexes()
[
	{
		"v" : 1,
		"key" : {
			"_id" : 1
		},
		"name" : "_id_",
		"ns" : "telescope.users"
	},
	{
		"v" : 1,
		"key" : {
			"test" : 1
		},
		"name" : "test_1",
		"ns" : "telescope.users"
	},
	{
		"v" : 1,
		"key" : {
			"test" : 1,
			"created" : 1
		},
		"name" : "test_1_created_1",
		"ns" : "telescope.users"
	},
	{
		"v" : 1,
		"key" : {
			"test" : 1,
			"group" : 1
		},
		"name" : "test_1_group_1",
		"ns" : "telescope.users"
	},
	{
		"v" : 1,
		"unique" : true,
		"key" : {
			"id" : 1,
			"test" : 1
		},
		"name" : "id_1_test_1",
		"ns" : "telescope.users"
	}
]