Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2fc06bc92f8e0480ffe714ce9342664e5208b15955afdaff5781253232a396c0' 
  AND token = 'CrAsxQIXqa/3qv1c+6QzY3aWITm1FXZe4/7/z4/wymM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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