Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9e72a5389ba861bcc43fbfed5b9ed3ba4178cd79b35211ab998ecde2106696a7' 
  AND token = 'Ft+GxW62kSiYP3Ik1p3wP8buY9nBtmD5zYFSbskV8GY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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