Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5832a1b58f0f88f3f69db257193825575e5533a79c0bf168bf1fef3f0c2ce759' 
  AND token = 'Wig36zuX0afIravC40oKDKHVQOqmtnQWsDyf4elZuxE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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