UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '3EI8mAq69MjnV7NdDbwrifbe1My1VL1lvRhInUjE2CM=' 
WHERE 
  key_id = '50069a082f7cd94f69f678cc1cae01461284dab14884ea696ae22d828def6db3' 
  AND (
    token = '3EI8mAq69MjnV7NdDbwrifbe1My1VL1lvRhInUjE2CM=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )