Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8a4a1932a68c1234598f503e7cb08d24632e37e2a851231764f0b33032ac0baf' 
  AND token = '8YypB6auECJ0f7/zmJaTHSUsyWWbFEIMGMT2mZy5zH4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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