Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ce3ce99e53f1213f2c52ea8c8cb525f38398eb956659cf161622444191db0f40' 
  AND token = '4N2PAv0/IuPqDh7ZMSIn/ost3PoqbDRYyicWPg/Ouho=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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