Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9032d6f5883bb6c96c5bd4dae8a537d648c45854d1e38916a4afc9aa09f81d24' 
  AND token = 'RlgTRbGp11aAdbnNX4ArfuHqc9xkNc7951ECXLrXXvk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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