Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '8e8b6e554a724cac82e207d8442bff505c7a5c080a9af3d09207962b2a464129' 
  AND token = '4N/aAdMQ2SaFMtyWMUmr+bUiCYUGcInzZkj8NR6XsFU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00008

JSON explain

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