Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd0be953dab9489e5dbe3d1b4ba24672762b57f989234019ca930a814a8ba3568' 
  AND token = 'ECX0+gxJ2p8iN8MOyXdbZX9Upiyblbu8niNeUlS90to=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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