Accessing a hash value by key is extremely fast. Is it possible to access the value of the first key with the same performance ?

hash_first.rb

require 'benchmark/ips'
require 'faker'

_hash = 100.times.inject({}){|hash, i|
  hash[Faker::Lorem.word] = Faker::Lorem.word
  hash
}
_hash[:aaa] = 'a'
HASH = _hash


def first_key1
  HASH.keys.first
end

def first_key2
  HASH.first[0]
end

def first_key3
  HASH[:aaaa]
end

Benchmark.ips do |x|
  x.report('first_key1') { first_key1 }
  x.report('first_key2') { first_key2 }
  x.report('first_key3') { first_key3 }
  x.compare!
end



#Warming up --------------------------------------
#          first_key1   198.267k i/100ms
#          first_key2   181.968k i/100ms
#          first_key3   340.302k i/100ms
#Calculating -------------------------------------
#          first_key1      3.171M (± 4.8%) i/s -     15.861M in   5.014686s
#          first_key2      2.599M (± 9.4%) i/s -     12.920M in   5.022006s
#          first_key3      8.260M (±17.7%) i/s -     39.475M in   5.004442s
#
#Comparison:
#          first_key3:  8260385.4 i/s
#          first_key1:  3171219.2 i/s - 2.60x  slower
#          first_key2:  2599325.1 i/s - 3.18x  slower