Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '412a9aebd111da6a307fbb24c9348dda8d41c9ae79a674feb3f0e86c90ee827e' 
  AND token = '4FcHfHRVj36THGDd88MftAH1B05Lt0rltDRi2lBfJ3g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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