Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd1a65fd3a034de23cc0c04f446352de224784b631fe6982129d9ecdabb9e94f3' 
  AND token = 'e2MQblz2CLiDF2Gc4kvwW7alRnqXzavxyfRl+Ykgnio=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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