Sql MariaDB非常简单的MATCHAGAINST查询不使用FULLTEXT索引吗

我有下表，显示为SHOW CREATE TABLE:

CREATE TABLE `lname` (
  `lnameid` binary(16) NOT NULL,
  `lid` binary(16) NOT NULL,
  `name` varchar(200) NOT NULL,
  `namerank` int(11) DEFAULT NULL,
  `score` float DEFAULT NULL,
  PRIMARY KEY (`lnameid`),
  KEY `lid` (`lid`),
  FULLTEXT KEY `name` (`name`),
  CONSTRAINT `lname_ibfk_1` FOREIGN KEY (`lid`) REFERENCES `sl` (`slid`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_520_ci

该表大约有230,000行.所有行的名称列都具有非空值.

我有以下疑问:

EXPLAIN SELECT MATCH(lname.name) AGAINST ('maillot' IN BOOLEAN MODE) AS nms FROM lname;
+------+-------------+-----------------+------+---------------+------+---------+------+--------+-------+
| id   | select_type | table           | type | possible_keys | key  | key_len | ref  | rows   | Extra |
+------+-------------+-----------------+------+---------------+------+---------+------+--------+-------+
|    1 | SIMPLE      | lname           | ALL  | NULL          | NULL | NULL    | NULL | 228370 |       |
+------+-------------+-----------------+------+---------------+------+---------+------+--------+-------+

我的问题是:我看到possible_keys是NULL(Extra是空的)，这是否意味着我的FULLTEXT索引不知何故没有被使用？

查询执行起来似乎很慢.

我在Linux上使用的是MariaDB 10.5.19.