Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8f709d8afadabc7f8846ac164d54878fd0150048093d9e9dbd704f7bcc2707ed' 
  AND token = 'DPD3ajRwT1g7I/qAAyjTvodI96TNVAqZ3DeiaHj3mss=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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