Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6fc6866d226a12a0663edb92777a32d953bd3c42a2960ca3600db0a6cd382e0e' 
  AND token = '9Gvu8DpcvIofPZXqutvWo2x6+2wf09gcIeq3uOlpx/k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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