This is worked for me
$this->addColumn([
'index' => 'created_at',
'label' => 'Created At',
'type' => 'datetime',
'searchable' => false,
'sortable' => true,
'filterable' => true,
'closure' => function ($row) {
return date_format(date_create($row->created_at), 'd-m-Y h:i:s');
}
]);