lock_wait_timeout0 (from MariaDB 10.3.0) means no wait. See WAIT and NOWAIT.
    --lock-wait-timeout=#
    numeric
    86400 (1 day) >= MariaDB 10.2.4
            31536000 (1 year) <= MariaDB 10.2.3
            0 to 31536000 (>= MariaDB 10.3)
            1 to 31536000 (<= MariaDB 10.2)