Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eea5e7012440423efaf1f2a8a736e0a0c5c914dd7dac0a139a06f0c10bbeffe8' 
  AND token = 'Mq61N3etYH0WxBZzGEXi5uLXKDZ/AZIhNaruSaRNPpU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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