Sandbox

SELECT 
  1 
FROM 
  tmall_lock_keys 
WHERE 
  key_id = '086eb80a340690cd3acde770c4853114d8d8654e5047ba4393a88a25bd4c8476' 
  AND token = '8R34nvIPGw3wColEzdoLeX1wzZh2Ad6xe4xr7it52YU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00803

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}