Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dc149f7dcaeedac7bc18ccc39e5eb5d27fc87a2d6e3699fa3139d85c7133c9d5' 
  AND token = '/wAUIVyosUf8sUfJpfeTTUOYfYBwp61eSMYbCUpndFs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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