Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32149d3a6dceaa431b75255c567f717eef6cd84166ccb9fc46c76cda645a700d' 
  AND token = '3g4xFxF7J+/Me5hCm+acyaS8ldqXyykKCNHYKSEkKkY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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