Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '20c7d653844a8d27aa4e8dbab7165196c734fe79ca80366559078fb07ab31818' 
  AND token = 'zkPyVfTDXWvmz34tETx3m6faL2DZEWcOJ79gmPQiolg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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