Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '80c0eb0a923504a5a95bdc2ec0bb49f5c30075c26bf80a535758041b4d2569d7' 
  AND token = '4EntRF9q3InboAgbUMdij88KmGSfpJ94emolRExMAJY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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