UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 300, 
  token = '8QaG9c30Sd7F4A2yj9SYXFKCygXUYjrq4dvE+UCPf1c=' 
WHERE 
  key_id = '521c3b5c65d1fe6085e572eb8341c77f94ba8afd8ab0882ce06a009ce01b4b05' 
  AND (
    token = '8QaG9c30Sd7F4A2yj9SYXFKCygXUYjrq4dvE+UCPf1c=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )