Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '61e678e113df8d32faa00e69153f903f9ff6b7518dfaad3ea5dcf97170da3604' 
  AND token = 'qOqyaC6bZGc9tgx+cStD5fneHoEjkglWJsKVdpSAMFU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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