Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2d7a6caccf890e8651bd7d60f885501a5921c519606f1ee2dae1e3b7cc131145' 
  AND token = 'H62EDQieVbqCjrp6HnXZjIALEKrN2O7f96BdgpQyKtg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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