A more generic solution:

my @spec = (
    'static1',
    [ 'ar1', 'ar2' ],
    'static2',
    [ 'ar3', 'ar4', 'ar5' ],
);

my $pat =
    join quotemeta(', '),
    map {
        ref($_)
            ? '{'.join(',', map quotemeta, @$_).'}'
            : quotemeta($_)
    }
    @spec;

print "$_\n" for glob($pat);
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