Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5edb38c699e27a361a9685e82a51cb63987a13ebffe301a2713845b3f3ee436e' 
  AND token = 'ARL1J4FQwGN6x3OGDStO9gaUic0DLB+VKyOLspOB4e0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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