Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e53e64978c44e288c6fb5cb41f92ddde6414a49bfcf3c74dbf6eb27e9d77084d' 
  AND token = 'J8OnqIUIkd6aITcpdjCQnuF/FOCmRDD0lgvanu5uvWo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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