Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32ca2a7229ccba2f642debbcf9d514e2cf681de87760d271521c85336bf02663' 
  AND token = 'oyrrxFN8hpnGT1bUv8OhZ+JesDjQWcDNUrTGVlTBAUU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}