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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '07e9360aee5ad4abf3807a9437b5182ec20d260900e90611622e79c04f871872' 
  AND token = '/X7g88fFKByi+Liog/wcNKDpz8YQQcVo5f33k5eJHQs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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