Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ea018368eee559307b70e4f60c1bfabdd3ff495ce32a328617118be80bc2c3b3' 
  AND token = 'ziqUdbFw5wSHHXR/e6HSY4kvEKV2Z7TbraUBBqh2kXw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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