Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32a5cb38d6fefd85c6e7d102be160d05576a45fa062727fa7b13a966707d6d81' 
  AND token = '1qUZfxSErmYkz0et5ihOv/vZ59FV8U+qhN0RdLKmc78=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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