Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7ba52f6fad69d10b8efbe6cf4d0b5aa19d65784f57a3ac736b423dd192737779' 
  AND token = 'fM6WuQLvb9uKAM/8mLdZEecKlqCmmajurHO7P068Nv0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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