Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '49453707fbc48a8616cf381303e0835850763ca9a4464b0ad91496904e12d50e' 
  AND token = '/bn7mKFIbjutfrbQxHzHNETMe8IWCBTFtxxRWCQtq9A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00429

JSON explain

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