Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '63dd0c7640ee18c1a97344c6737491b61e73f034efa761127f1565c2bb2f414b' 
  AND token = 'bbvZhkUyxSgVOOa3JLHrHo4nmeDigvk0tB+Nf5kAqNw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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