Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6edaf23559431c616b838d4bb5fdd5b938020790e5d725760f611c6cc4a6fb82' 
  AND token = 'JYWTCbz4efG84KkUHtJ4ag/q63Jv96Dolic2qoQX1Y0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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