Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2ceea95c05c7ef452dfe437af4d1dad08b728e6ebebc63878f94c12638c8ba83' 
  AND token = 'TUa8HtVEjCu6xFlULvb8RyQCmCDhpW59a5xKvNaE4/A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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