Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8131ba8957d2bc886be4c501501a2bd2055aed5e6e883988e09c533e6bf1e29d' 
  AND token = 'e4tV7MKwU6yV/so3hZ7fAd6Inys1W9Pc46deDvLed10=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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