UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'MJwQlvxw/yg5vT7trwK0kC0j9NiuWkc0UOgt05vajsg=' 
WHERE 
  key_id = 'b12b341dcbf49194dfca1a995e3c5691fc76801968ca84a82d527cc25baf23b5' 
  AND (
    token = 'MJwQlvxw/yg5vT7trwK0kC0j9NiuWkc0UOgt05vajsg=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )