SELECT 
  video_id 
FROM 
  cscart_cp_video_product_links 
WHERE 
  product_id IN (35) 
  AND `type` = 'I' 
ORDER BY 
  position

Query time 0.00048

JSON explain

{
  "query_block": {
    "select_id": 1,
    "read_sorted_file": {
      "filesort": {
        "sort_key": "cscart_cp_video_product_links.position",
        "table": {
          "table_name": "cscart_cp_video_product_links",
          "access_type": "ref",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "4",
          "used_key_parts": ["product_id"],
          "ref": ["const"],
          "rows": 1,
          "filtered": 100,
          "index_condition": "cscart_cp_video_product_links.`type` = 'I'",
          "attached_condition": "cscart_cp_video_product_links.product_id <=> 35"
        }
      }
    }
  }
}