Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cefbe1446b4caa5f056f1724cfc9b157f75f3600317edfde18d6682f17978ee7' 
  AND token = 'Zo9nXxBF8OR4657aYY95BxfJJkR/vqdfdbifjoN+Kfs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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