Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7d2127bec62ae89c26fda1517d6730a861fd99c405c2e6c9a5af330ee4687f8d' 
  AND token = 'r71K+CR4WzQFCHDMhEZM/OAQIbM4gI4NLHYT7MgdyWU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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