Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7b64ca06c7f1284c6ac934d64c79524bcdbad00a3c68291332ceac06d15e6744' 
  AND token = '69sysjK7n/28aa7j37kbbYQQvj5vXUD1AXfz1fgMJyU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}