Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '86f13abc9b46064f282b058ebe298f3c11c5339c84a3c23cf759c2dcf3639b66' 
  AND token = 'Vc8ydOZEixqSvFaceX75Y7krhoLeb9GW/CCgw6SZaVc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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