Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '07621819a4d64d801751a4ee33edd7880528bfa4227607ebf1638a35ea936ff0' 
  AND token = 'cp+nexpMAsteAlXrGKolX1igsIVSdtuaZY6WNdH1ADI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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