Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '64d65ccc4baf77350ec3b7d69d80647156ccf4449c00aa84b457306d9d93bd84' 
  AND token = 'ocr6DlIdoeo8LH3WKdNzsqnr4Q/F1zE0t8f/W6ih8C0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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