Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'de9cb931bc295c2b393d058d1d7442fa9a5b458f6ef1376ca8306b24189611d9' 
  AND token = '3usCAsMXmqWEQsVyxYaz9ndtEF9HLM4x0eGcoknj4qQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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