Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '254934ddc8f2ae2146e847ab17a0cdc178b672f5d4320fc9b540ccc58d63b9ea' 
  AND token = 'iPzP2yMDprpu5sw/I+4VOMGQpNRDqw418/eNXzmw0mI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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