Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '04c85313044b598894fe013b0c63eb1cdfe5b55d53e96bc6749d2cda4786116b' 
  AND token = 'IYNuxDNcChNYKV6X5M7BcKNNfhjpGGTSLbTArMbaokM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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