Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '668060f464210049b6c922309865250c8a4d9e1c035e39a977dfbc9b4e786817' 
  AND token = 'T3Of5vipB9Y8fPirPhPfpHIElhRlB6D8b+pcDw/Vc3A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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