Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ce8c22dfdbc8ef8384dac2e0cfa0f043b28522c203a86fb97cfd6115b2e724bb' 
  AND token = 'hYaroiu5VOsjDwZB/FS4Q1LzfrDYngxiUInFW2nooyY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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