Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c1aefe4018133c4f4f387545e6afaaea8cf22c596d0e1aec17c2b12f71b91af9' 
  AND token = 'wtPozBMCBZZxliOuUDrSV6r001AJxKiOaXjUBkmimVc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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