UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '9eJqxYyJLfVKYO0ilKiVxSEljU3t6x/eAp6iMP8Ogeg=' 
WHERE 
  key_id = '3a536cc49c25c99f8abfc412173952f810172af3becae06f327975a591ffb548' 
  AND (
    token = '9eJqxYyJLfVKYO0ilKiVxSEljU3t6x/eAp6iMP8Ogeg=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )