Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0260f317dc1cbc468ea7a831023f47a88a1b55b3b7f56b0f897f3a95cc76232b' 
  AND token = 'itQUDeoDWbuphCVI6Zzp7Mbb/vymH8nO/md3GE3iWbM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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