Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '86c605b9924077471abc10a811337becde8fa17739486b84f2e8b1771dfa8699' 
  AND token = 'zWx9GtKng+7FukBWiCWB/422nfv7T28DS9SN8JOovB0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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