User Meta

$usermeta_query = array(
	'relation' => 'AND',
	array(
		'key'     => 'api_userkey',
		'value'   => 'c8fd4e69-36fe-44d6-ac29-d04e08ec5159',
		'compare' => '=',
	),
	array(
		'key'     => 'api_secretkey',
		'value'   => '#}*~%>(^^}#}[>>@&{!}~!*>>%]{#',
		'compare' => '=',
	),
);