Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '10194a7d1321a10cb6e5f778c8cc06eaf0f6f7cbe474fab473fbed95a579011d' 
  AND token = 'QjNZHxzM9ZObdcwcPHu2cc5weypVEhzWV3LKplmPxFk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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