Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '637f34ba06f52bbd7e8d0838536744243353e9bff93f2a1c5ce15844d207d352' 
  AND token = '65mctx9qhRbWgSTMM0hY2EcLsrI3tQvmgZTdZ3HsDH8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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