$orConditions = [
['UF_DATE_ACTIVE', "<=", mktime(23,59,59,date("m"),date("d")+1,date("Y"))],
['UF_DATE_ACTIVE', "=", null]
];
'filter' => \Bitrix\Main\Entity\Query::filter()->where(
[
["UF_ACTIVE", "=", 1],
["UF_ELEMENT_ID", "=", $arFields["ID"]],
["UF_CREATED_BY", "!=", ['column' => 'UF_USER_ID']],
])
->where($orConditions, "LOGIC", "OR");