Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a3552164d442525e421cfe304bb84e8080f1008b5a6aebbd959b006fe26e7281' 
  AND token = '9LGnhAg8O98kAB1bK9DorxAf8Ilm/Nor2xUcoLnm0ZQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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