Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4587159972970cccafc919d812ace0b9a0f76ae45381096cf5cb790f16f21f74' 
  AND token = 'a331ZEupfz5QwE/Z09wYg/tp4bu2pI++JoRP+axAiaU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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