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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '07009532335f75630d1e222376f8affeebc542f6401e15a0a6ff213fce184a7f' 
  AND token = 'gowgM5VIKdYAY1xBZbRLFVOKZ6scorN3RrlolDx5YNI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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