Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '92af930ceb65f696386bd9206b170965c82e5d59e1cb1ebd41abe65b703b2616' 
  AND token = 'tSjQXXz1qJug1Xc5SCUpDSC46I/3AFJCiH3KHuqj4Ng=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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