Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fbeb611c54c5d4a86894cdb51b240a4e6a2d2614dfc547ff220cdc45d2fdfbdc' 
  AND token = 'OJPPJOGjG09JvUDMKktMkEl+J0yKgBABkwdQM3eY7v8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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