SELECT 
  1 
FROM 
  tmall_lock_keys 
WHERE 
  key_id = '3ce1d9a4cb184c7bdb9283fdffec65b4a441d8fc9629b732374b47cde88a9a57' 
  AND token = 'kyzVR5RLAhCax7ZkKi9J4h1Cv/NQjZHPqL7o6zRdZ6A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.01550

JSON explain

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