Update "proto" to "production".

query.sql

-- Update custom fields

UPDATE
  `wp_postmeta`
SET
  `meta_value` = REPLACE(`meta_value`, 'proto/', '')
WHERE 
  `post_id` > 0;

-- Update site URL

UPDATE
  `wp_options`
SET
  `option_value` = REPLACE(`option_value`, 'OLD-URL', 'NEW-URL')
WHERE
  `option_name` = 'home' OR `option_name` = 'siteurl';

UPDATE `wp_posts` SET `guid` = REPLACE(`guid`, 'OLD-URL', 'NEW-OLD');