Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9cfc5d73fbc306636c2bbe249838c4655ea2b75b2fc68df8984246fbed3d0ef2' 
  AND token = 'lOWcT3VqOc40dq4SKhn/UJBGGdn1DIRBIW2AdtKKLiM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00082

JSON explain

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