Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c6ebb47c9c541ec4e9f71eaf511a8de6179fe39237b113768139211c49d4b880' 
  AND token = 'vqNTD6PW48lJQQupNK8RoIVx7PgNPdBfg49QQdTKZyM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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