UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'xnDQADvTzc5ZdPHZ5YNuj9LK3clQJFZzTiXJF0/aGkI=' 
WHERE 
  key_id = '96da708fc27226ce03c095883a7c4c1d51ed975c50e6e3e60471f6fa710c50c8' 
  AND (
    token = 'xnDQADvTzc5ZdPHZ5YNuj9LK3clQJFZzTiXJF0/aGkI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )