Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ce5c67856efffbaf143ce113de14c5a6511fe184ff2331af504b7be5ec1e74a9' 
  AND token = 'aV3Qb5CvjDIY6CLmpz/noz6KOykY9lbTUhnQ7z05Wlk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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