Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fd8b4464b9a0bc8c12121e35fb61516fbefab7e8306877a3400901b87a8e1883' 
  AND token = 'a8JQ4t7BmiUr80EAHVP8Uu5+aSzJISiax0LGcs577s8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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