Need help to restrict route access to some id's

i need that guest's can access only to link 'fixtures/1' and 'fixtures/2'

when they manage to other id's, for exmpl 'fixtures/3' they should get something like "page not found"

i tryied like this:

Route::get('/fixtures/{team}', function ($team) {
    //
})->where($team, '1')->name('front.fixtures');

but it doesn't worked. Can somebody help me, how i can add clause like this?

here is my route without any changes:

Route::get('/fixture/{team}', 'FrontController@fixtures')->name('front.fixtures');

EDITED:

I tryied to restrict with using if, but everytime i open page it doesn't check on id, here is my method:

public function fixtures(Request $request,Team $team = null) {
        $matches = Match::where('home_team_id', $team->id)
        ->orWhere('away_team_id', $team->id)
        ->paginate(20);
        $teams = Team::all();
        $team = $request->route()->parameter('team');

        if ($request->route('team') !== '1' || $request->route('team') !== '2') {
                return view('front.fixtures')->with([
                    'matches' => $matches,
                    'teams' => $teams,
                ]);
            } else {
                abort('404');
            }
    }

via Chebli Mohamed