Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd68509bb1e15b5074e66b7502666624a266b5b61f91e0c9e22284926dde91142' 
  AND token = '641GmZR1vUfvJhPvDW/52CYXzR2YNYyugbxl9V/guuk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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