Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '80ba6967e89a8112e473374ce100e8af7ba03d5b836c5ae01282fa794a8526e7' 
  AND token = 'FPLkagFRW21xJqih+xbPKeBBS9RVenq9VhwEs3HiMig=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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