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 = 128 
  AND type = 'abyt' 
  AND abt__yt_data_type = 'blog' 
ORDER BY 
  b.position ASC 
LIMIT 
  1

Query time 0.00097

JSON explain

{
  "query_block": {
    "select_id": 1,
    "read_sorted_file": {
      "filesort": {
        "sort_key": "b.position",
        "table": {
          "table_name": "b",
          "access_type": "ref",
          "possible_keys": ["PRIMARY", "status"],
          "key": "status",
          "key_length": "3",
          "used_key_parts": ["status"],
          "ref": ["const"],
          "rows": 19,
          "filtered": 100,
          "index_condition": "b.`status` = 'A'",
          "attached_condition": "b.`status` <=> 'A' and b.abt__yt_page_id = 128 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": ["orbit_cscart_orbit_cscart.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
    }
  }
}