Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e85c54292c6b8169a8a09855ced225de1062684d740ed97df567437229d5f146' 
  AND token = '7Xdq+4ntXKlAiXZTn1Ms7Kjxmgih77ZxMjdoqR2r2Qw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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