Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'fe8a903d89abf6d09e06126b261bab6429f3856798db529b9c924ab7a772679f' 
  AND token = 'Yl0oQqIsfoJg+pqcoK3pWyuecxrLEkSjO02EynCmRu0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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