Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b57da166f800908e0aa3b646f0038caaad5ce049272b3d2a46efec72243ce43c' 
  AND token = 'XZcXkHgLlSC5rDHOFlsPzYtb7U0h6Rmj5QOufBfJD00=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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