Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93d35fd62d1e6d183d0ad0d6f95b4039d1b5f1ace2793b385dcd8d217765fa04' 
  AND token = '48qMzbqdxGk07Ysrux1aJlVuzvBSC4uHnvbMLJ5r8wc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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