Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bc7f793d2ab1685ce68ecf158bedb9ff2bb031ae232d116bcdfae09877728750' 
  AND token = 'ZtE8XesKKNL8UirW6nPA2Jiypnm03P0HeKXEVMNBbLs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}