Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0bd29da0281e03ddf7fa2ee497e339a883f62d9893be56e7550b27b459455176' 
  AND token = '+yJCnndwUC7BCtXkyxnEDyn7IYJYMb418ZJTMZKei2g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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