Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ca89dcc48c84ed36bf426b9b5b565f651404a7ee92b0680f6329de2138e8e649' 
  AND token = 'rflwlmNSMskmx7FoOKTwY0lu33xAPunyKSMJSZ6OEwQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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