UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'AVuu9WwO8vY949pAEaXBLq98xWx4QaGdRlmETthROhk=' 
WHERE 
  key_id = '6786f134cf9eef8b65b370ecac2c8eed694baff67a03e738cea2e34ab8692504' 
  AND (
    token = 'AVuu9WwO8vY949pAEaXBLq98xWx4QaGdRlmETthROhk=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )