How do i put timestamp in a different timezone?

[sag-kz]

Here is my config:
`
@type forward

<match preprod.*>
@type sql
host fluentd_mysql
port 3306
database fluentd
adapter mysql2
username root
password ******

table tablename timezone +06:00 column_mapping 'timestamp:created_at,container_id:container_id,container_name:container_name,source:source,log:log' `

command date returns Wed Sep 20 18:21:57 +06 2023.
But the sql record is still populated by gmt time