@date("Y-m-d") yerine milisaniye cinsinden karşılaştır tarihleri.
<?php
$gc['groupid'] = 4;
$gc['sonuc'] = 1;
$us['extra14'] = 1;
$us['extra3'] = strtotime("2022-03-15");
$currentDate = date("Y-m-d") ;
if ($gc['groupid'] == 4 && $gc['sonuc'] == $us['extra14'] && $us['extra3'] < strtotime($currentDate))
{
echo "test";
}
?>