Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '94a67ec0931e28947b945029a7d89ccac459c1a5d0e098689eab8b6d10264a8b' 
  AND token = 'IcSqFmhlpMsHir+HDB4Ikzx3KbrQcXKRXjXUWa9yggE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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