Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '54cec6735171033a0d9eaebebbbfc90b81d0159ba516c4a1319f41ece325476a' 
  AND token = 'fuOQotbIb5khp5yGGv18eG2zx+9wNW+tqBREkGXV6I8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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