Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '25a6a03abfceb2b8a8b1fb97cf75f341ad2cef615de11fe0a9325f9eb1596e70' 
  AND token = '9iLnoeDexdAW/MKhWaTpvImdZ+S8GOeArefxOtdfKJQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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