Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ff341f3a3c66fdc130129e684cb88d4af681086c1506488e4ba84f57501507a5' 
  AND token = 'x0XGJk+mI9GgchU30wuA/7Ztc5eB/wnSmJURrZ4MK2k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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