Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3b745e530fa943af2bf27b23b75ed4c79fe8d8cec3072aea4335a33ff63d1db3' 
  AND token = 'JINwnvON1S5XhOY+tJtX2MoOmCZwz4Gncl2WNk7D4IQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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