title: Laravel JWT dont expires
body: <p>Im using firebase/php-jwt this package and try to expire the token after 10 seconds to see if im getting error and its seem like the token is still valid. what im doing wrong?</p>
  
  <pre><code>$key = "example_key";
          $token = array(
              "iss" =&gt; "http://example.org",
              "aud" =&gt; "http://example.com",
              "iat" =&gt; 1356999524,
              "nbf" =&gt; 10000
          );
  
          $jwt = JWT::encode($token, $key);
          $decoded = JWT::decode($jwt, $key);
  
          print_r($decoded);
  </code></pre>