SELECT 
  a.usergroup_id, 
  a.status, 
  a.type, 
  b.usergroup, 
  a.use_as_user_type, 
  a.need_activate_user, 
  a.notice_email, 
  a.position 
FROM 
  cscart_usergroups as a 
  LEFT JOIN cscart_usergroup_descriptions as b ON b.usergroup_id = a.usergroup_id 
  AND b.lang_code = 'en' 
WHERE 
  1 
  AND a.status = 'A' 
  AND a.type IN ('A', 'C', 'V') 
  AND a.use_as_user_type = 'Y' 
ORDER BY 
  position

Query time 0.00049

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "7.72"
    },
    "ordering_operation": {
      "using_filesort": true,
      "cost_info": {
        "sort_cost": "1.60"
      },
      "nested_loop": [
        {
          "table": {
            "table_name": "a",
            "access_type": "ALL",
            "possible_keys": [
              "status"
            ],
            "rows_examined_per_scan": 16,
            "rows_produced_per_join": 1,
            "filtered": "10.00",
            "cost_info": {
              "read_cost": "3.88",
              "eval_cost": "0.32",
              "prefix_cost": "4.20",
              "data_read_per_join": "1K"
            },
            "used_columns": [
              "usergroup_id",
              "status",
              "type",
              "use_as_user_type",
              "need_activate_user",
              "notice_email",
              "position"
            ],
            "attached_condition": "((`webmarco`.`a`.`status` = 'A') and (`webmarco`.`a`.`type` in ('A','C','V')) and (`webmarco`.`a`.`use_as_user_type` = 'Y'))"
          }
        },
        {
          "table": {
            "table_name": "b",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "usergroup_id",
              "lang_code"
            ],
            "key_length": "9",
            "ref": [
              "webmarco.a.usergroup_id",
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 1,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "1.60",
              "eval_cost": "0.32",
              "prefix_cost": "6.12",
              "data_read_per_join": "1K"
            },
            "used_columns": [
              "usergroup_id",
              "lang_code",
              "usergroup"
            ]
          }
        }
      ]
    }
  }
}