Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '34ccb450cc955d4801ecc3c15b55301493ae97e1e6b8a2999d278295ee255b6e' 
  AND token = 'BZJ48qDz89tchR7OUfSv6MKyFaOxi7kWQRQ0cebrNKM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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