In place of your if, try putting

use Data::Dumper;
$Data::Dumper::Useqq = 1;
$Data::Dumper::Terse = 1;
print "preprod is at $preprod, env is ", Dumper($env), " database is "
+, Dumper($database), " rt is ", Dumper($rt), " value is ", Dumper($pr
+eprod->{$env}{$database}{$rt}), "\n";
print "prod is at $prod, environment is ", Dumper($environment), " dbn
+ame is ", Dumper($dbname), " q1 is ", Dumper($q1), " value is ", Dump
+er($prod->{$environment}{$dbname}{$q1}), "\n";
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and see if anything looks different than you expect.