UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'nU6Lm+Fkl403xYoUX6H193vpABlcWWkZrA5sT2R2+KY=' 
WHERE 
  key_id = 'efad90ede59eec4e4727b63ceae950b566d60a4aead3c67703463d39b8cdd6e9' 
  AND (
    token = 'nU6Lm+Fkl403xYoUX6H193vpABlcWWkZrA5sT2R2+KY=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )