Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bcfae2397a026a4414413341e17d1d0c3822005bd867cf78ea8af931605b56de' 
  AND token = 'CLV9qjnJFw3BcdPu2+fNRiTTN5PMAAdVG0RO1q4lZSw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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