Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bf74c4fcda32cc1374c2a35a95656d56008e58cd55be9d8c2ef702afc090e161' 
  AND token = 'fxxuk6wzslkNu4r5Xv5GHVPHwB/vWyy9qqwx2C6gclU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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