Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '844616dd89d4d8724942914639188ad8f8389f5a766fc6b270979d7e3f7ea092' 
  AND token = 'juZLVZG1jAHlNQPXm0iCPW8PEUI9ieBtS8Se6oIoTKA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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