Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8ef5ba32efa10785bab0fded16cf38b36fb188b423942770ab05a250efe72279' 
  AND token = 'duY9N6run0hq7J9mL6Dp670N4mwF1nlz0gqh2hPGNm4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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