SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '86c3d64769c2655bf61766b93de832e94914df306867ab687411d25ce3ce9ae7' 
  AND token = 'VG1jlVQkpLFkwt6f+9koQnaD+gY6Zz9wfmGMoivLvos=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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