Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3ea72474ede5a0bd0912303699481ebb2d219468045ca154660aa32e107d9e32' 
  AND token = 'Y/S2hx/oRfa6p/gA8AYc6tISNeMOiv/tfYTlGCneQ2Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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