Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eccf5ed4d7a3000a965808a9f4173e95c846a192cdb9b36feff7eb4faa01adfa' 
  AND token = 'Q98tbDkzL+4dUdDrQRCg15R87QYo8kpocC9M6FbSi3c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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