Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4da6a695a211cad1a50bddbc656d75d86f9f664963c6dca48dc9647cd0d10725' 
  AND token = 'QczjDeIL28I7xANoNekj5pcTPWK0u3NrXyZz0c0Gj/4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}