how to generate random unique token in database laravel code example

Example 1: laravel generate unique token

use Illuminate\Support\Str;

public function yourFunction(){
 $var = Str::random(32);

 dd($var);
}

Example 2: laravel generate unique db token

do {
    $token_id = makeRandomToken();
    $token_key = makeRandomTokenKey();
} while (User::where("token_id", "=", $token_id)->where("token_key", "=", $token_key)->first() instanceof User);