Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9229fbc85d9163f39efe2e1bd7b65d048bee0092e68fdf61a0e45a0d8f605242' 
  AND token = '3r752+t6jE86RHXw3PvL3siWwZOu4nO+7A4ELUXt8WM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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