Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '249a2dc872207710dff42a2b371ad8dae247594c4512af1256908493de50d549' 
  AND token = 'hNxFQmxtAKyohlfdOwzcXfv5keMmZ0apaPytTnjLYPo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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