Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '87119f6302588c6d09ad868f216e2964599e2f5be0f6739a4e6a5045be7c2d47' 
  AND token = 's9B17yG5hx/INDY2qcEOVKbjSm6AbD77uBotuALEON0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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