SELECT 
  b.banner_id 
FROM 
  cscart_banners AS b 
  INNER JOIN cscart_ult_objects_sharing ON (
    cscart_ult_objects_sharing.share_object_id = b.banner_id 
    AND cscart_ult_objects_sharing.share_company_id = 1 
    AND cscart_ult_objects_sharing.share_object_type = 'banners'
  ) 
WHERE 
  b.status = 'A' 
  AND b.abt__yt_page_id = 8 
  AND type = 'abyt' 
  AND abt__yt_data_type = 'blog' 
LIMIT 
  1

Query time 0.00067

JSON explain

{
  "query_block": {
    "select_id": 1,
    "nested_loop": [
      {
        "table": {
          "table_name": "b",
          "access_type": "ref",
          "possible_keys": ["PRIMARY", "status"],
          "key": "status",
          "key_length": "3",
          "used_key_parts": ["status"],
          "ref": ["const"],
          "rows": 24,
          "filtered": 100,
          "index_condition": "b.`status` = 'A'",
          "attached_condition": "b.abt__yt_page_id = 8 and b.`type` = 'abyt' and b.abt__yt_data_type = 'blog'"
        }
      },
      {
        "table": {
          "table_name": "cscart_ult_objects_sharing",
          "access_type": "eq_ref",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "159",
          "used_key_parts": [
            "share_object_id",
            "share_company_id",
            "share_object_type"
          ],
          "ref": ["n764025_kutubminar123.b.banner_id", "const", "const"],
          "rows": 1,
          "filtered": 100,
          "attached_condition": "cscart_ult_objects_sharing.share_object_id = b.banner_id and cscart_ult_objects_sharing.share_object_type = 'banners'",
          "using_index": true
        }
      }
    ]
  }
}