Hvormange AND kan man have

Hvor mange AND kan man have i sådan select sætning her

    $ip = $_SERVER['REMOTE_ADDR'];
    $side = $_SERVER['HTTP_HOST'];
    $ref = $_SERVER['HTTP_REFERER'];
    $sex = mysql_query("SELECT COUNT(*) AS `ialt` FROM counter WHERE ip='$ip' AND side='$side' AND date_add(dato,interval 24 HOUR) > NOW() ORDER BY id DESC LIMIT 0,1")or die(mysql_error());
if(mysql_result($sex,0)==0) {
mysql_query("INSERT INTO counter (ip,side,ref,dato) VALUES ('$ip','$side','$ref',NOW())") or die(mysql_error());