title: Eloquent complex query
body: <p>I need sql query, but i need to use Eloquent:</p>
  
  <pre><code>"SELECT * FROM Pass WHERE serial_number=$registered_serial_numbers AND (updated_at IS NULL OR updated_at &gt;= $passesUpdatedSince)"
  </code></pre>
  
  <p>I try but have error:</p>
  
  <pre><code>$registered_passes = Pass::where('serial_number', $registered_serial_numbers)-&gt;where("updated_at IS NULL OR updated_at &gt;= $passesUpdatedSince")-&gt;get();
  </code></pre>
  
  <p>How should i do it in Eloquent?</p>