Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '829ea33956c363ef39d49b60de1716c8aec72bab3a00903c9f8c3c08e4f1b542' 
  AND token = 'TmyxSMPbYQFizD5xW888vTI7Ge629tj1cvQk7Sz1ZvU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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