Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd1d9d597e5431218f49e2ebdb50acedbac5c75c9595199e4eeabcfc7f2a67094' 
  AND token = '3sfKk3rEMudX8GTNTL8/Il6Fyyi36xI5GJ5iu/uZDko=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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