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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05f5f5b93da72b5693b9de2d3278babba122b38cf364b9e1b6cbc706efc0c88f' 
  AND token = 'Ilr2xZKeELLTk4k8/rPdWHH/7MCWmpxw3X4qR//qwEs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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