SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '061c6810689ac275864d3e685038647e6a4fa483de35d29b7ce8f75df1d30f6a' 
  AND token = 'SAkjvqgyC/sGadhl1hpPinKZAJ65YwUgSEvELg1DzA4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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