Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bb85eee9fd509d1655ebdd510f46beafcadc80de2c41281d6c01c8d601c34d0e' 
  AND token = 'YCo5RUdVFeZPbBWBQqGEUflOXwitC7u6qrmrwMYpa6o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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