Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '37616bc12c4648c303d1f2586d1269f00231dcc17919ba58c99392ef7b0daa2e' 
  AND token = 'uT/LcTYXqU00B7frylc/kr0uSLJX5RwQY6Hks+nv4M0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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