Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6579f11fb0f9991ba8e8ee3797e41bf4ccb38a899d4f770a5ff68a1157d12520' 
  AND token = 'rfB8yggOS2J0JIgSx1KxK79s8soBGwG1WolrGN49EBs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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