UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'RK8vb1eIPmN0vkb1fKiK8TCLiNfgulunIh7z0wgAHAY=' 
WHERE 
  key_id = '81791fcdda815a8434476572a97a1e38e21f363e0659f4e17f4a8a0a6ec43197' 
  AND (
    token = 'RK8vb1eIPmN0vkb1fKiK8TCLiNfgulunIh7z0wgAHAY=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )