Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e4f804ccd27eaed9b7c2382583563ba7c180fee4f0d87459b2325be6709851b6' 
  AND token = 'ZByjAquMqrbDlAiu5Zoh2eQ9iVWcIwunjc70rqeFCoo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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