Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd907b5487d74548ee6af358e404a43172b48df4304f77e11627ba1398ab9e1ce' 
  AND token = '0bKbZw1vAsNERVvQzV918VrjsXT0AMA94fqU4RVE1Y4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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