Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '08e7ec583c5cda77e51762df3e98fecb1f010c7e52a28ec7ff26a903ef36f25e' 
  AND token = 'bodYzhJCAeyNQq9G792rJ5vGSPa3fGvQXNLw07Al1ZM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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