UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'dz7UFYQr85Bx19+YNJNDpwE7NvwusnFGcqPqG1A16SA=' 
WHERE 
  key_id = '835115a477495cd2c2b8715891613b04f1c1e6e2ff1232235bbb6fdd43ca29a7' 
  AND (
    token = 'dz7UFYQr85Bx19+YNJNDpwE7NvwusnFGcqPqG1A16SA=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )