Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9424b50dd90865e8132e7a41ad0d39194a63b70ac24030c7d0520ec17966718c' 
  AND token = 'CTORGk9s7BJ7FR9CBv1vDRdOqVXembvwgpRjJn1ehwY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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