Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9fe03557dc4b397161c08f90ea0a41e9bf7951e04de5c7e5fbfb16d71a8077e6' 
  AND token = 'WAZX2QTLF0D7usywfp9wfg8wYFy3PMio4lHr49pQ+v0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00057

JSON explain

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