UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'NknYzGhlWFGUCX6jlqrMzf7Zj0JIp4I//aED1Nt/zQM=' 
WHERE 
  key_id = '323971aff8e0e7177d581f81c9b538181962d3fbbf49908a9d0472721091f635' 
  AND (
    token = 'NknYzGhlWFGUCX6jlqrMzf7Zj0JIp4I//aED1Nt/zQM=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )