Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '372d2655da8c2a4eda2cf115dde2def92012369af9f6eb8011c61edcd246fa08' 
  AND token = 'E78UoYvcUbWZOKYalrJYY0T2zKZgkIjkQ/K17+mrlYA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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