Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8d1bf4981f01467e270e6e50f92ec930727d1cea144db0d34de474de58475e1e' 
  AND token = 'X0J3nYYXTnRnHPLY6V9S16fjfO5qAnhp5852LtDtVpM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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