Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c96001322ad821e8c61be4025f76f8ef576aa041a4105054c2d0a807cf17016e' 
  AND token = 'liUnVLBKez03eEOzSOPrBkarkpZ7kZVX2MF9HtiSKrE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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