Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eb9416329f1c4001332f2cc5fde7257605328fc36c43a7c187513a4e7054a81a' 
  AND token = 'HReEvN1v3/wpVSE7579hmd2WH+bgyEUm0J/7iOXkWHY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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