Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7f89d44c756fb48f520e6827b693ebd5d91f9d7177d73840abf755ed6f64e891' 
  AND token = 'E5qAfB6/URMrYC1A0K+yRFfgthSupeYVbD/iq13pxlo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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