Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f19459ff6bbecf47e90d70ae8f9c018a16a150fb3219fc5f68705dbf2e4e664e' 
  AND token = 'gfYc9Nt3zKiMVLQirYqG4oCXLDAPi0H9FwCADAIZNeo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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