Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '07d4a4b1f4ccf56352c9212d4336e50c8d9b68f4278b7dffc6143d2f7b668c24' 
  AND token = 'i1r71iC6Yj5YrnxMx8uFEVenRwbVJBTHl3tKheJeVY4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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