Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '322d5ded67676c8d0f88b845e2ac604377253820894af89af9573087523f5b49' 
  AND token = 'O33sTHsGR7KWFP63RuWPfEEnhpwbUc17/lmHNCU18yw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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