Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '79b5786b5f409dfbf459b6493e266b02e95325a992dfff2a06e0632c2973bfeb' 
  AND token = '364tvTw8a4HfvAc1LVe2Iy9rjqf3OgJ+admxJ+My3YQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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