Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3d963a28c4116b49ddae944d031490b9a8f145fe3fa6184e0d8553f257379170' 
  AND token = 'pQwrQA5LpkQSRXBkn2OAgRskgZwFJCw6WHEfTZx+sS0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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