Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9bbf1a6f82d7cb7357f05b99431975377b63f2580eec741f435fd804624719c1' 
  AND token = '9AuU/YSjP4fFpIsUM8DZTIUESbUOD+YMChhduRSiAeU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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