Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bbdb000c2746af0c71c006f691d18703bdadad134d814258bd053b872f4310ab' 
  AND token = 'ntxzlZgDE2dL+JQFjA2A1nflKLjZ6aZ0yxt3k/T8Yik=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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