Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f74a6160452ac52e1bb591747c8043b953e491e077942d29d0642fd84fc4bea9' 
  AND token = 'uxWopwCD4wdwRwHrMSx36Pdh8xpNy8qL1npH8kRvVzM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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