UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 300, 
  token = 'u4S3Csvw+OV5Z3pMf5COuwtT7V7Tg8XsRV51jVfdhRo=' 
WHERE 
  key_id = 'b39c265b5defeb0e289b6e5c9778cc979b29f80d1cc39925cce6df4a5e31ed91' 
  AND (
    token = 'u4S3Csvw+OV5Z3pMf5COuwtT7V7Tg8XsRV51jVfdhRo=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )