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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9e230fdf9e834c908135cf19807223559e11367fb9cbe21fb1c2ad92dbcdf816' 
  AND token = 'ggc5ECNfgXF7/mu4ltfgKwczThsVf5jh4LFjYcqY97I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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