Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '65648611109ae1f1a6c2271c102b907c5cca211a23e08498d9fcf75a3049adf1' 
  AND token = 'RBvzyu75V26DR5T8qkfKVGpw5fHd96YAqUT+Jp534Ec=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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