Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7435c8360b77934515063c723c026244105734813bbcfd43952e01f696e60c6c' 
  AND token = 'nX+xnKiO79xFS9lC18oqME7yY0Gk/U9Lq7y/Bq42q+4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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