Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fa0239ebd3a230d79337d8fb6a31e68d32ee070106801a32213026cec113ef20' 
  AND token = 'meu7ba/iKhFiMle5Cgvd3nil4IBN92ojMIgISZM97Ug=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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