Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f1fa678c07e97d57851579b16e0f6c794cca9589e4472b2d5344d6cea4850067' 
  AND token = '4l1pHlGaLTpe1dQH0uZMdaUBkyk0Q41WeCCAD9Cgsio=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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