Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4976c3b759e651e02c91bc34158fa6a70b797f58015bf25008ca892501cd1725' 
  AND token = 'LyxdOyw7SwAmv+YpJZCab2mBN/xXaOMa44dgyZlgDQM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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