Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d2fa8f1d8bde700e5f9d32383011df6050cba2ba17f7d11bfc5173854a8d94f' 
  AND token = 'TAId3vEshbpE0IMwRj/fuouRlYCDbjqAqELy0TZqNFg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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