Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cf8cc3d6c00c1d4770ca8219c1fdb8b034ff0c4984e0dd8bd85329eab54a586f' 
  AND token = '3UUI72d7aM/OZJRE8xGw0qU2HiuoPgvRs2FwqwdJXoU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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