SELECT 
  cscart_ab__video_gallery_descriptions.video_path, 
  videos.video_id, 
  videos.product_id, 
  videos.status, 
  videos.pos, 
  videos.product_pos_type, 
  videos.product_pos, 
  videos.type, 
  videos.autoplay, 
  videos.show_in_list, 
  videos.settings, 
  videos.icon_type, 
  videos.storefront_id, 
  cscart_ab__video_gallery_descriptions.title, 
  cscart_ab__video_gallery_descriptions.description 
FROM 
  cscart_ab__video_gallery AS videos 
  LEFT JOIN cscart_ab__video_gallery_descriptions ON cscart_ab__video_gallery_descriptions.video_id = videos.video_id 
  AND cscart_ab__video_gallery_descriptions.lang_code = 'de' 
WHERE 
  1 
  AND videos.storefront_id IN (1, 0) 
  AND videos.autoplay = 'Y' 
  AND videos.show_in_list = 'Y' 
  AND videos.status = 'A' 
  AND videos.product_id = 133 
ORDER BY 
  videos.pos ASC 
LIMIT 
  0, 1

Query time 0.00030

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost": 0.0051722,
    "nested_loop": [
      {
        "read_sorted_file": {
          "filesort": {
            "sort_key": "videos.pos",
            "table": {
              "table_name": "videos",
              "access_type": "ref",
              "possible_keys": ["status", "product_id"],
              "key": "status",
              "key_length": "3",
              "used_key_parts": ["status"],
              "ref": ["const"],
              "loops": 1,
              "rows": 1,
              "cost": 0.00345856,
              "filtered": 100,
              "index_condition": "videos.`status` = 'A'",
              "attached_condition": "videos.`status` <=> 'A' and videos.product_id = 133 and videos.storefront_id in (1,0) and videos.autoplay = 'Y' and videos.show_in_list = 'Y'"
            }
          }
        }
      },
      {
        "table": {
          "table_name": "cscart_ab__video_gallery_descriptions",
          "access_type": "eq_ref",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "9",
          "used_key_parts": ["video_id", "lang_code"],
          "ref": ["cscart.videos.video_id", "const"],
          "loops": 1,
          "rows": 1,
          "cost": 0.00171364,
          "filtered": 100,
          "attached_condition": "trigcond(cscart_ab__video_gallery_descriptions.lang_code = 'de')"
        }
      }
    ]
  }
}