Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ab48b4758091c7eb026f6435679b64a60753452a92351c0aae6325796e60b8d4' 
  AND token = 'JOYDf1WtCXjbaYyxB66Lt8FP/MfL4JsYi9CThEqeOSo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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