how optimize prestashop category get product for random

this is prestashop 1.7 version category get product query. if use random, it is very slow, how optimize it?

SELECT
    cp.id_category,
    p.*,
    product_shop.*,
    stock.out_of_stock,
    IFNULL( stock.quantity, 0 ) AS quantity,
    IFNULL( product_attribute_shop.id_product_attribute, 0 ) AS id_product_attribute,
    product_attribute_shop.minimal_quantity AS product_attribute_minimal_quantity,
    pl.`description`,
    pl.`description_short`,
    pl.`available_now`,
    pl.`available_later`,
    pl.`link_rewrite`,
    pl.`meta_description`,
    pl.`meta_keywords`,
    pl.`meta_title`,
    pl.`name`,
    image_shop.`id_image` id_image,
    il.`legend` AS legend,
    m.`name` AS manufacturer_name,
    cl.`name` AS category_default,
    DATEDIFF(
        product_shop.`date_add`,
    DATE_SUB( "2019-11-30 00:00:00", INTERVAL 7 DAY )) > 0 AS new,
    product_shop.price AS orderprice 
FROM
    `ps_category_product` cp
    LEFT JOIN `ps_product` p ON p.`id_product` = cp.`id_product`
    INNER JOIN ps_product_shop product_shop ON ( product_shop.id_product = p.id_product AND product_shop.id_shop = 1 )
    LEFT JOIN `ps_product_attribute_shop` product_attribute_shop ON ( p.`id_product` = product_attribute_shop.`id_product` AND product_attribute_shop.`default_on` = 1 AND product_attribute_shop.id_shop = 1 )
    LEFT JOIN ps_stock_available stock ON ( stock.id_product = `p`.id_product AND stock.id_product_attribute = 0 AND stock.id_shop = 1 AND stock.id_shop_group = 0 )
    LEFT JOIN `ps_category_lang` cl ON ( product_shop.`id_category_default` = cl.`id_category` AND cl.`id_lang` = 11 AND cl.id_shop = 1 )
    LEFT JOIN `ps_product_lang` pl ON ( p.`id_product` = pl.`id_product` AND pl.`id_lang` = 11 AND pl.id_shop = 1 )
    LEFT JOIN `ps_image_shop` image_shop ON ( image_shop.`id_product` = p.`id_product` AND image_shop.cover = 1 AND image_shop.id_shop = 1 )
    LEFT JOIN `ps_image_lang` il ON ( image_shop.`id_image` = il.`id_image` AND il.`id_lang` = 11 )
    LEFT JOIN `ps_manufacturer` m ON m.`id_manufacturer` = p.`id_manufacturer` 
WHERE
    product_shop.`id_shop` = 1 
    AND cp.`id_category` = 12 
    AND product_shop.`active` = 1 
    AND product_shop.`visibility` IN ( "both", "catalog" ) 
ORDER BY
    RAND() 
    LIMIT 50