SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '963a41a6c640a4ef970e35151cc95713cf9c75246bf71ea621ea2c63e44ec52f' 
  AND token = 'gbXKYwcf8fBeJS+ddghSTDkxr0J2H1zQqBnog8VUzgI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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