php ลบข้อมูลเกินเวลาที่กำหนด *รบกวนช่วยดูหน่อยครับ

<?php
require_once('Connections/MyConnection.php');

$result = $con->query("SELECT * FROM tb_bookingcar");
while ($row = $result->fetch_object()) {

  /* ถ้าเกิน 1 นาที ให้ลบ booking */
  $timeDel = strtotime($row->bc_datebuy) + 60;
  if (strtotime($row->bc_datebuy) + 60 <= time()) {
    $bcid = $row->bc_id;
	$carid1 = $row->bc_carid1;
	$carid2 = $row->bc_carid2;
	$dates1 = $row->bc_datestart;
	$dates2 = $row->bc_datestop;
	$times1 = $row->bc_timestart;
	$times2 = $row->bc_timestop;
	$bc_seat1 = explode($row->bc_seat1,' ');
	if($row->bc_seat2 != '-'){
		$bc_seat2 = explode($row->bc_seat2,' ');
    foreach ($bc_seat2 as $key => $value) {
      if ($key != 0) {
        $con->query("UPDATE tb_seat SET status='N',sex='' WHERE status != 'Y' AND seat='$value' AND dates='$dates2' AND `times`='$times2' AND car_id='$carid1'");
      }
    }
	}

  foreach ($bc_seat1 as $key => $value) {
    if ($key != 0) {
      $con->query("UPDATE tb_seat SET status='N',sex='' WHERE status != 'Y' AND dates='$dates1' AND `times`='$times1' AND seat='$value' AND car_id='$carid1'");
    }
  }
  $con->query("DELETE FROM tb_bookingcar WHERE bc_status != 'Y' AND bc_status != 'C' AND bc_id='$bcid'");

  }
}

 ?>