Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '033fb9072131358a1d490d6ec04e13f0cef5cc0f401619a63361e2981e04b319' 
  AND token = 'wXoCc3sesTcJ1CAjUYC8Pb2QrDf5y95p8g7UudmY1Kg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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