SELECT 
  status_id, 
  status 
FROM 
  tmall_statuses 
WHERE 
  type = 'O'

Query time 0.00759

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost": 0.013007295,
    "nested_loop": [
      {
        "table": {
          "table_name": "tmall_statuses",
          "access_type": "ALL",
          "loops": 1,
          "rows": 19,
          "cost": 0.013007295,
          "filtered": 100,
          "attached_condition": "tmall_statuses.`type` = 'O'"
        }
      }
    ]
  }
}