UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'kpayLzmKStGacME5KXXTY6d8nHflT7wwHkesOxAB/xg=' 
WHERE 
  key_id = 'ebf939a3cf8da04baff7785970f946ccfbbbb07159c9830f334627da9c9bf761' 
  AND (
    token = 'kpayLzmKStGacME5KXXTY6d8nHflT7wwHkesOxAB/xg=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )