Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c157b18aac252587d3fd7e4abe19b03ba9c23390665ff92c3a6548eb59e930fd' 
  AND token = 'YaJ6TTxOQIGbgcOScjLesNVlUwolv5qY5Nelpa0+Rqk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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