Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '71bc94609edfab6f9a5e74494afcf524f33b50ce0c63e91ac4824ce43248b081' 
  AND token = 'Iuf9MTr26iGdwWJ0QOQG31JTrH1OoTTvSkiRVrqTFlE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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