Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7ee2a2e599f3ea4f480474f18d9d136dec18cb0dde4319fef505200afd5c4eb9' 
  AND token = 'r59GcmQXz0ax0jLibxKD6IbtQ2q2RbGJ0odbEVHH+O4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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