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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '47b491f3e2292ffcb3db1be2aaca43b83005753efd72e512088167110cfa8734' 
  AND token = 'HuX0h/fPuUe/5ZeGa79lI4Id2yD1f6wZsgMYKn1ZdlY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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