Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b27ffa8f275bc15b48cdf30832170166c7aefd715f57afe51f323f753ea2adb0' 
  AND token = 'sVPTr8vb1BXh8KzR/07fPPwJaevUH/0Cc5PSTnuEupc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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