Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5daa0fa462ff9dd7438cbe6e1135493e69b6ef803235f9c9d8b182481a870956' 
  AND token = 'hSQ/Izon/S61IIAYcZAq2aDvWciQ8nCCyjGNG0GWZg0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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