Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c0659b7b120f248c9693d8b6d0bb834a02b4a6007b74ca107539644bbbe92976' 
  AND token = 'cveVAd/5c+FycuzPZCUcaWS4OKhYKKZNIdFMWgivMNE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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