Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '41cfd3be656ba520bcf21fd13c25f37ea513a29680beb1fdd5d026f87db6b7af' 
  AND token = 'NHDWq/VK7mK9dIgQuS6TJJl7U2rQOFRG+HN2FkDa5IY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00058

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}