Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f95e743b4a53d1872e24b8335d6c983eb2eed2a89f95c60ca500b2c9ec99f766' 
  AND token = '5ol2Gy37oA/kjeZoKjwY9F3R2XBRVicqXBPiDZSKMdU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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