Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '742bbfe9ca819f3ffca895d742b4c634e763775c384628a5d6c16a80b856bb17' 
  AND token = 'K98sCRywtfPAapN2n3/Fisn0OSUGZrdwLaD42pzv5OU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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