Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '561b0fb46a7fd306d74258e2e8a090d53db800b2de25c882e61d6dc7ed263da7' 
  AND token = 'FevsXCsLzyIpWY32tedUSOrV8ttGx0QME5iqiiJAIV4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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