Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4db9c28613e73647d0032f6a4a6ada31e5cac009453c0f6f9ba04ab09e7db522' 
  AND token = '11BUSqWAZu6nK4kwvGBVvz/FQZdNPbmbf660eC82m9o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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