Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '73064b2c18338dd4ba8bd035b4e3aff6a34d93790e180f532c1627b36e3b14be' 
  AND token = 'V8xrFza2n9UZpudU758duZhGReIrkbGTQEnYj6AptNs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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