Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a67d409349a0fff026dd2daca00f9aceb0b8b4a823991edd486b8bbfc8d10610' 
  AND token = 'tDTZMsVrT7zBTxULs3dLPKBWfv2mPZlIvARljX/WkDE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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