Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '23a48ef3058a6fe86b348b2a3e9a02adc9184e8d5e7a400ccb7bcd80e2015389' 
  AND token = '+P3s9D9DZNYDYZN3nBWAXs8I8Y58NshhBWvtM+mNITk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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