UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'PS0/4JVqjJ2Hd2y3kLBy0+ysNFqBoSH/9FyRcvL+fcM=' 
WHERE 
  key_id = 'b41cc88a2545b9ae033fdb9aa51b9e6ca450286664211ff91555c5e0624a8478' 
  AND (
    token = 'PS0/4JVqjJ2Hd2y3kLBy0+ysNFqBoSH/9FyRcvL+fcM=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )