Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cf7056e824283b9c6a5785427980837122b1372fd9089ca949cc1a99f1928246' 
  AND token = 'c1A0Xm5VKVShUIvW948Gt6imLc6Khp9z/6IX2mJNuio=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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