Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '63db7b51397e42aa09b09cbb90b3dc57387cbe76917fad48392b0d472991e3c5' 
  AND token = 'LfjxPoLyfnSaQ8+mOsY+48FvToWyiQ8u1NrkNfw8VG0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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