Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '19b0afc0b549c37cb5b4189460a5e79558d1bfd10046f9832f39e4794fcbf4fc' 
  AND token = 'Pxlf05P4IipPoQoPMhXuP3r2omCCxyM2mb5ME3Rg8fI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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