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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0219ee222a7801be46c23d4bef46d149426515133a9ba5e75cd3acd4e44ae46a' 
  AND token = 'l2buRlhMtCbi5f8TytTmmDBuNLcJK9W4cB44ZaV1VI8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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