Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f63666ea20888c0809db59135617fad72b012abf22d1fed251b52befc01659cf' 
  AND token = 'lNrxCLPGxvftIWU6zbjVBnur/5uuu1sugou014N8UkA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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