UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'eY1nP7v7p5vaA2NoYj4FgEkHZG324EMUDBbmcLamywE=' 
WHERE 
  key_id = '6d34c9df556b193bc78a2b0f3469179159850c17f1c61e63f19befc352b3b34f' 
  AND (
    token = 'eY1nP7v7p5vaA2NoYj4FgEkHZG324EMUDBbmcLamywE=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )