Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6fa1b30680115c1e982e5169f1e9d0cde5a6dfc4ab62ca33751cf31a83be203e' 
  AND token = 'A5Ro4qwlpv8lYIKfXtZwefUfEJQK7YSryXeeKVPVxaA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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