Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'feac4aade4dbf92c655bb1019738409acc543dbf1fcdb44880afcc9fbef8a1ed' 
  AND token = 'JUJ/lbolvtuZR1wN6HIZ1XlnRV0poiJulD+qrNLH/0s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00057

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}