Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a99d2aa868d6714859b5309fe35972daba5c45c6f0a983a51645a4723ca791b5' 
  AND token = 'xssdYdnv92oaRuz6Zi6FgVmY39YxXjmZiyFmBwRbAyg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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