Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '088b2a62d7d65a61e0fa9ce8b9e571a5db6e6437267e93482b0e6b64cec0aaa6' 
  AND token = 'O0KzPru2fa+Po8FZlfuoYB861E8XxQEmAzNRwqJQjVI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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