Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aa8d8bff808154b1c86f6fd12e31cd53de52b67c7f3011aacacc02cd90640fe4' 
  AND token = 'IN+EVyalM98w3CGRuTXgGeSoGk3c3EKNT35zlyaPTvQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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