Need an explanation about a slow query with MariaDB

I have a "simple" query how takes 0.7678 seconds or more to be executed with MariaDB.

Here is the query:

select  `referenceNumber`
    from  `invoice`
    where  `groupId` = 3550
      and  `referenceNumber` >= 301
    order by  `referenceNumber` desc
    limit  1;

These columns have an index: "referenceNumber", "groupId"

Here is the result of an EXPLAIN:

I found a solution by creating a subquery like that:

select  `referenceNumber`
    from  (
        SELECT  id
            from  `invoice`
            where  `groupId` = 3550
              and  `referenceNumber` >= 301
          ) as subquery
    JOIN  invoice as invoice  ON invoice.id = subquery.id
    order by  `referenceNumber` desc
    limit  1;

This query takes like 0.0011 seconds.

Here is the result of an EXPLAIN:

Do you have an explanation about the poor performance of the first query?

Two surprising findings:

The query without the where `groupId` = 3550 takes only 0.0005 seconds like that:

select  `referenceNumber`
    from  `invoice`
    where  `referenceNumber` >= 301
    order by  `referenceNumber` desc
    limit  1;

The query without the order by `referenceNumber` desc takes only 0.0011 seconds like that:

select  `referenceNumber`
    from  `invoice`
    where  `groupId` = 3550
      and  `referenceNumber` >= 301
    limit  1;

Here is the schema of this table:

CREATE TABLE `invoice` (
  `id` int(10) UNSIGNED NOT NULL,
  `groupId` int(11) NOT NULL,
  `referenceNumber` int(11) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4
            COLLATE=utf8mb4_unicode_ci;

ALTER TABLE `invoice`
  ADD PRIMARY KEY (`id`),
  ADD KEY `invoice_groupid_index` (`groupId`),
  ADD KEY `invoice_referencenumber_index` (`referenceNumber`);

ALTER TABLE `invoice`
  MODIFY `id` int(10) UNSIGNED NOT NULL AUTO_INCREMENT;
COMMIT;

Thank you really much for your help!