Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5d1cb14b27f170d699614b8c989c9a2738ab96e78cc1753523089b489e150279' 
  AND token = 'HlR5qbuQYbUc0j5Av/r2sPNd8BPpxisI4vsCC/pA5zI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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