Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c85d485130d115973b70a3b2b17861fae807eab8b39ac5b88153f90a750533e8' 
  AND token = 'KnVIzsiD08HRVoLoK1/+OX4EYpZyByZesME4eeoQuGo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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