UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'A27jk+XNWfDLjVAfZwmTq7+MSIcvaHgDorAeyMIopUc=' 
WHERE 
  key_id = '2f256ffdbfd3fe09246aa82253466b4edd23e8e0036b13550083e3de79fd0c30' 
  AND (
    token = 'A27jk+XNWfDLjVAfZwmTq7+MSIcvaHgDorAeyMIopUc=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )