Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '75d27af23f48e9b0ad6c0558d11aa5ce3ba32d91f208881b649285eca54d304c' 
  AND token = 'Tz9b7IVY9764icQMqj6gH4SXYXwJm9o1lo04xC+a1SQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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