Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7a3ff2b4ef50d0cc8ad6fb49193079919fbb33c5c8c36fe3dae1cfcd083e99e2' 
  AND token = 'GTW2qxJB1ggLb1NtbgSW75k5OvKVEuM5ik8DE59AjlE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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