UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'au6CqqR570cSZ///oP8ProdbyZdeRpXpVDTDPpvyfZM=' 
WHERE 
  key_id = 'a4fec70dc4a5be47b7771ff9221bd2eb8f638eb9b93b871d5cd88b2e53d7b18a' 
  AND (
    token = 'au6CqqR570cSZ///oP8ProdbyZdeRpXpVDTDPpvyfZM=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )