Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '02a33c43e40607f3225374794674e5b4deccd3da0259cabf10275aa756b1ecf8' 
  AND token = 'J0hEuDiWVSZ5hMi0YtsuZY5j4/DKVLJUI7q4NRjxUFY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

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