Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eb9deb040203094a4d8976211c9f26ac93ebef20dcc8b63188c8419c937e5f4c' 
  AND token = 'NvgY7MMoQcpUrZSychZCbDopv69Qa7y0ENIWIbhjWsM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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