Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6600450c34017ca46d831bffb35e70a6bad0df423101fa4c99b8a6cdcea69678' 
  AND token = 'cVFkqI38kZSDIZ8vJ2AgI3fLIY2AG7odI02ai8oHFD0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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