Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '082f4d2ab93ae6c133463e05c603c906223328d9d974e16ef6907cfe60a9ef73' 
  AND token = 'yM6yD8yzpXA3Zvg3+CXv0f+NcKrbxFJKlr6nLAHwMVs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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