Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2bfcff2e87e252ab6bed3038372f8eb06b55debc005cb6624307e5e44d11b42b' 
  AND token = 'MZp/5y3+jesK58/pV6ank76XK0yz4vesAmaFd8AvWWc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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