UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'u4qhwsyGgsi38tpYsqMJxQwECjMnvTFHXqw+l2sszxs=' 
WHERE 
  key_id = '6de8883ba35f10f92b468bf3adcaa6e07ba93823a0e014dd55f3e6b071ba1a42' 
  AND (
    token = 'u4qhwsyGgsi38tpYsqMJxQwECjMnvTFHXqw+l2sszxs=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )