Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6e76ebdb2bb990adb221a701b55d4b70f887d39445b2e24205246ac061db4f24' 
  AND token = '2KoVFbi/1lzgL6y2Jh8YA5BsWbVZ3MwmibylNoLLRjw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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