SELECT 
  tmall_tags.tag_id, 
  tmall_tag_links.object_id, 
  tmall_tag_links.object_type, 
  tmall_tags.tag, 
  tmall_tags.status, 
  COUNT(tmall_tag_links.tag_id) as popularity, 
  tmall_ab__tag_descriptions.h1, 
  tmall_ab__tag_descriptions.description, 
  tmall_ab__tag_descriptions.page_title, 
  tmall_ab__tag_descriptions.meta_description, 
  tmall_ab__tag_descriptions.meta_keywords, 
  tmall_tags.ab__sft_conditions, 
  tmall_tags.ab__sft_generate_by_cron 
FROM 
  tmall_tags 
  LEFT JOIN tmall_tag_links ON tmall_tag_links.tag_id = tmall_tags.tag_id 
  LEFT JOIN tmall_ab__tag_descriptions ON tmall_tags.tag_id = tmall_ab__tag_descriptions.tag_id 
  AND tmall_ab__tag_descriptions.lang_code = 'en' 
WHERE 
  1 
  AND tmall_tags.tag_id IN (1) 
GROUP BY 
  tmall_tags.tag_id 
ORDER BY 
  tmall_tags.tag asc

Query time 0.00774

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost": 0.005841182,
    "const_condition": "1",
    "nested_loop": [
      {
        "table": {
          "table_name": "tmall_tags",
          "access_type": "const",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "3",
          "used_key_parts": ["tag_id"],
          "ref": ["const"],
          "rows": 1,
          "filtered": 100
        }
      },
      {
        "table": {
          "table_name": "tmall_tag_links",
          "access_type": "ref",
          "possible_keys": ["tag_id", "ids"],
          "key": "ids",
          "key_length": "3",
          "used_key_parts": ["tag_id"],
          "ref": ["const"],
          "loops": 1,
          "rows": 4,
          "cost": 0.001343622,
          "filtered": 100,
          "using_index": true
        }
      },
      {
        "table": {
          "table_name": "tmall_ab__tag_descriptions",
          "access_type": "const",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "9",
          "used_key_parts": ["tag_id", "lang_code"],
          "ref": ["const", "const"],
          "loops": 4,
          "rows": 1,
          "cost": 0.00449756,
          "filtered": 100,
          "attached_condition": "trigcond(tmall_ab__tag_descriptions.lang_code = 'en')"
        }
      }
    ]
  }
}