Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7bfae4e0d28daa0bc91f643d031936f557ba6fdecdddf7263ebdb68b5c27550e' 
  AND token = 'vQEXBZx51qKYjYhceEdWKw4W6L6DLvnB3bPxYUTH2cU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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