Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '582ef386bfd209bef3936031761b6e7467c0e9ed2e5eac915616d709ebd47fcb' 
  AND token = 'OJ6LXYCvObFLfMbJ/O0a7F8/R3rlp5l+JZbxglqAFnU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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