Maybe, dont know to be honest, but what you wrote wont compile.
For simplicity , why not just do this...

my $i = 1;
my %hash = (
        'hk' => 5,
        'jk' => 6
);

$hash{'abc'} = 7  if (! $i);

foreach my $key (keys %hash) {
        print "the key is $key and val is $hash{$key}\n"
}
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