slow (5 sec) query: SELECT COUNT(id) AS c FROM `counter_visitors`
<!--
Array
(
    [1] => Array
        (
            [query] => SET NAMES "utf8"
            [duration] => 0.000108003616333
        )

    [2] => Array
        (
            [query] => INSERT INTO `counter_visitors` (ip, useragent, referer, `when`) VALUES (INET_ATON("216.73.217.72"), "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)", "", "2026-09-13 23:39:07")
            [duration] => 0.018786907196
        )

    [3] => Array
        (
            [query] => INSERT INTO `counter` (`when`, stat) VALUES ("2026-09-13", stat + 1) ON DUPLICATE KEY UPDATE stat = stat + 1
            [duration] => 0.0135819911957
        )

    [4] => Array
        (
            [query] => SELECT COUNT(id) AS c FROM `counter_visitors`
            [duration] => 5.15597701073
        )

)
-->