Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e60d4e693026703a279583e781610d9547079b32d3ea306b69332bc1365744ad' 
  AND token = 'Fuc53tQmubXg7RSi+381ryz44No2+9yfumJvfKauDaE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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