How do I check for token expiration and logout user?

In my view middleware will be the best option.

You can do something like this

const checkTokenExpirationMiddleware = store => next => action => {
  const token =
    JSON.parse(localStorage.getItem("user")) &&
    JSON.parse(localStorage.getItem("user"))["token"];
  if (jwtDecode(token).exp < Date.now() / 1000) {
    next(action);
    localStorage.clear();
  }
  next(action);
};

You have to then wrap it in applyMiddleware