Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65387acf3972a4a8e22e44361e2502a4eb5268adf6948db8035d4cc93c750ecb' 
  AND token = 'pR1cLIi9OZWSdDzLAzuors10wNbDAZGBjTC3uwuhJKo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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