Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7fa5608bd8a9003fecad78830aa4e6ae7035a46dfe9d4ad5ffc384cfa2cb0e49' 
  AND token = 'H46keYyuvy7oxGJTY3J1PmurUoXLsIcuunfkwCBWUUE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00061

JSON explain

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