Missing Lines:

my %key_hash= %{$VAR1};
$key = 'response_1.3.6.1.2.1.2.2.1.12.27';
$oid = '1.3.6.1.2.1.2.2.1.12.27';
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And now the code which should give you '1'

print $key_hash{$key}{$oid}[0]->[1];
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Possible Error Detection:
$key_hash{$key}{$oid}[0] contains a single reference to an Array. So your code

 
print "@{$key_hash{$key}{$oid}[0]}\n";
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dereference it and prints the entire array. Above suggested code just prints '1' as the 2nd element of that dereferenced array'.

artist