Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3132cbd42d19ec1857d2c3d3ded5fd6925c5eda8ff419e27545e84bf64497aa5' 
  AND token = 'E5QgwbOZrp7uD9xG/t+ui4rBzAR7LSueJLRsz3P5mz4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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