Finding checkbox attributes nested in table td's using jQuery

I have several checkbox fields which are nested in table td's like following:

 <td>
    <div class="am-checkbox ChangeCheckbox"> <input id="check20" type="checkbox" checked="checked"> <label for="check10"> </label> </div>
</td>

Now all other checkboxes have same structure as well.... Now what I'd like to do here is to trigger a click event to change the state of checkbox and check/uncheck it when it's clicked on it...

What I have done here via jQuery is like following:

 $(document).on("click", ".ChangeCheckbox", function () {
          //  $('#check20').attr('checked', false);
            //  console.log($(this).closest("tr"));
            //console.log($(this).closest("tr").find('td:eq(2)'));
            $(this).closest("tr").find('td:eq(2)').attr('checked', false);
        });

I'm trying to find a row which triggered the event, and then it's column #2 (eq(2)) and this is the column where the checkbox is placed...

Now the only problem here that I don't know how to solve is how do I access the input checkbox type after selected second column like following:

$(this).closest("tr").find('td:eq(2)') // how to select now the checkbox and set it's attribute to unchecked?

Can someone help me out?