Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a2d285faa9d854feba4a8283641a6fb08315cc90a82c97a38bb3be98e0360377' 
  AND token = 'gsISbwEiDRxd8yumfRCNpXJsSDz72ezv7DLXFw3eZ28=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}