Restricted access – allowed user

$meta_query = array(
	'relation' => 'AND',
	array(
		'key'     => 'restricted_access',
		'value'   => '1',
		'compare' => '=',
	),
	array(
		'key'     => 'allowed_user',
		'value'   => 'currentUserID',
		'compare' => '=',
	),
);