Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '883b78791862689feddc2b912affececa0105d8f8782f24a921e72da6d7eff7b' 
  AND token = '13BJm9McIniKuPGEbdsmogi95N+1psfNUQgpQZX0YGM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

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