Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fbd65b2b776f60cd8b6ea635fbd326e60a190538d4b007f9695390c49aac43bb' 
  AND token = 'VuJF13L5GA4zGhcAbaQe5KDkUcTAjXEoi1/pXvvTBaY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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