Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'baeef967fc54956fd597ef6f8d18453e837f31a8a3e5d04cdad5a64fd55438cd' 
  AND token = 'vdP23M/ggOHQYKlOGM/PImneWCqE4zUz1U22OUzoSnk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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