Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32a9c619b455756a1b0cb8865ef06a29de7036096a2fcd2ae26f9981ee0da061' 
  AND token = 'kMv2N3SYMYs8KKH12N4KBSQn3jWsf99/+LPu9edECXg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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