UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '3Zf4UZeN7eKHR6wkkklx56tHVWb9OZX3CKaZj/S8/bw=' 
WHERE 
  key_id = '4cf6a944b7807da407a6bb4634e38b4c906775f3da50c5f97b3c36111eb0a933' 
  AND (
    token = '3Zf4UZeN7eKHR6wkkklx56tHVWb9OZX3CKaZj/S8/bw=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )