Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4831e74b788f4cf981c5b23ba1ee70db981cfb7f4d4af4bf5cb510ff60ae5934' 
  AND token = 'Joe9Su8N4xXPU/YmptxyD0ihKpzXJGz5k5d9NeaKrl8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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