As an alternative to tadman's solution, you could also use a hash slice, like so:
# Everything else is the same as your original code
$sth->execute(@{$q{'-values'}}{@{$TABLES{$q{'-table'}}}});
# Or, a little more readably using temp vars:
my $table = $q{'-table'};
my @columns = @{$TABLES{$table}};
my %values = %{$q{'-values'}};
$sth->execute(@values{@columns});
bbfu
Black flowers blossum
Fearless on my breath
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