Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aca7785e63a1e584af0aed30576305bc9a5dcc57323ec0badc62b99887ce36bd' 
  AND token = 'xaazPJjwVCAUvHIBhxwnHx3q0du028NlGKN3ARX+WY4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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