Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3b6058c65e4812ad913355ec1fe45ca86937774441ddd5d631dafeab4efde566' 
  AND token = 'diKFTEj44RxY34teBkYP5o40+VfT88mOor5CfoN5YtE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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