Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '19bb7959735bb8386dd105d7949e6f16709dfd43af0bbbc4a35578b820eececa' 
  AND token = 'AEwDJnYuJ4tO86TdgswzTNxF9O4uX9zMG/o058PnIRI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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