Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cd6097480ae28c27ee3db21525f81318dc388d831484df8e7627c92832b63e13' 
  AND token = 'g6/m6++baGnxNxpgGeBuOXzasoQjij/sgNtMjgErhVo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}