SELECT 
  * 
FROM 
  cscart_seo_names 
WHERE 
  name = 'nhan-qua-oc-cho-vang-say-lanh' 
  AND lang_code = 'vi'

Query time 0.00473

JSON explain

{
  "query_block": {
    "select_id": 1,
    "nested_loop": [
      {
        "table": {
          "table_name": "cscart_seo_names",
          "access_type": "ref",
          "possible_keys": ["name", "type"],
          "key": "type",
          "key_length": "752",
          "used_key_parts": ["name"],
          "ref": ["const"],
          "rows": 1,
          "filtered": 100,
          "index_condition": "cscart_seo_names.`name` = 'nhan-qua-oc-cho-vang-say-lanh' and cscart_seo_names.lang_code = 'vi'"
        }
      }
    ]
  }
}