UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'KUN+PS11MbZ7I5vi4x08gBmm2ItJJr5yt3QyMVyN17M=' 
WHERE 
  key_id = 'd1fe91777a625229f325145d1f1b72f60f16cb07f01aefc70588c9210e9376a5' 
  AND (
    token = 'KUN+PS11MbZ7I5vi4x08gBmm2ItJJr5yt3QyMVyN17M=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )