SELECT 
  IFNULL(ab__lc_landing, 'N') as is_landing_category, 
  IFNULL(ab__lc_how_to_use_menu, 'N') as how_to_use_menu, 
  ab__lc_menu_id as menu_id, 
  ab__lc_inherit_control as inherit_control, 
  id_path 
FROM 
  cscart_categories 
WHERE 
  category_id = 266

Query time 0.00034

JSON explain

{
  "query_block": {
    "select_id": 1,
    "nested_loop": [
      {
        "table": {
          "table_name": "cscart_categories",
          "access_type": "const",
          "possible_keys": ["PRIMARY", "p_category_id"],
          "key": "PRIMARY",
          "key_length": "3",
          "used_key_parts": ["category_id"],
          "ref": ["const"],
          "rows": 1,
          "filtered": 100
        }
      }
    ]
  }
}