my @exists = grep {
    $temp_array[$_]->[0] eq $temp1
              &&
    $temp_array[$_]->[1] eq $temp2
} 0..$#{$temp_array[0]};
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The resulting @exists will contain the indexes into the two anonymous arrays your @temp_array holds where the comparison values are at the same index.

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}