CakePHP 3 Query Update

gistfile1.phtml

<?php
    $updateQuery = $this->query();
		$updateQuery->update();
		$updateQuery->set([
			'workerkey' => $key,
			'fetched' => date('Y-m-d H:i:s')
		]);
		$updateQuery->where($where);
		$updateQuery->limit(1);
		$updateQuery->order([
			$ageField => 'ASC',
			'id' => 'ASC'
		]);
?>

Results in 


UPDATE queued_tasks SET workerkey = '1f27027e65456a5cc1e1bb6e737c09feb851c1f7' , fetched = '2014-09-05 08:30:10' WHERE (id = 1 AND ((workerkey) IS NULL OR fetched <= '2014-09-05 08:28:30'))