UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'MqJSWVrcZBJwDh+i8BQPvFTiIycMCVK1lwxlQ9HaL4k=' 
WHERE 
  key_id = '56d40590115f57268465839aa31b8f973d47faf51e9a62817d7bf43436ff2c80' 
  AND (
    token = 'MqJSWVrcZBJwDh+i8BQPvFTiIycMCVK1lwxlQ9HaL4k=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )