Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5d6604b2da640cd634adb774f28d607c6a62407b25639e5efb160710ae165422' 
  AND token = 'ipqJj7UhjvyOy2zax8RiT/ltl3OZ9xcj/ntec6n6xRU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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