Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'db94ae9b201c350c1b850d2dcc4476606e90612a088c8a18a5a189cc7b162769' 
  AND token = 'axxTw0UwHsERR2VsMUhOihZavRRdcVSFms3MlA1Gi1Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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