Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '060ba1a9aa146a9c505db055c40a5254e7d04e1cf9f2dca55ee288ed20081291' 
  AND token = 'lG6U/lmSfe2IfzC2ICHogPF5wi42HbAXeDZHxF6o/cA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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